Orthodox Christians should believe in the holy trinity(Father, son, holy spirit). That they are all connected to God but not the same.

Orthodox Christians should pray daily, not only for their own needs, but for others. Even if you hate them (One of the ten commandments: Love your enemies as yourself). Pray not only to Jesus Christ (All glory to his holy name) but also to the mother of Christ, Mary.

(T.W) This one might be controversial but in general, Christians shouldn't celebrate pride month or anything related. We can respect but we shouldn't support. (sodom and gomorrah, Leviticus 18:22, ext)